C++ bitset any()用法及代碼示例

bitset::any()是C++ STL中的內置函數，如果數字中至少設置了一位，則返回True。如果未設置所有位或數字為零，則返回False。

用法:

bool count()

參數：該函數不接受任何參數。

返回值：該函數返回一個布爾值。如果設置了布爾值的任何一位，則返回的布爾值為True。如果未設置任何位，則為False。

下麵的程序演示了bitset::any()函數。

示例1:

// CPP program to illustrate the 
// bitset::any() function 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    // initialization 
    bitset<4> b1(string("1100")); 
    bitset<6> b2(string("000000")); 
  
    // function to check if any of 
    // its bits are set or not 
    bool result1 = b1.any(); 
    if (result1) 
        cout << b1 << " has a minimum of one-bit set"
             << endl; 
    else
        cout << b1 << " does not have any bits set"
             << endl; 
  
    // function to check if any of 
    // its bits are set or not 
    bool result2 = b2.any(); 
    if (result2) 
        cout << b2 << "  has a minimum of one-bit set"
             << endl; 
    else
        cout << b2 << " does not have any bits set"
             << endl; 
  
    return 0; 
}

輸出：

1100 has a minimum of one-bit set
000000 does not have any bits set

示例2:

// CPP program to illustrate the 
// bitset::any() function 
// when the input is as a number 
  
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    // initialization 
    bitset<2> b1(3); 
    bitset<3> b2(0); 
  
    // function to check if any of 
    // its bits are set or not 
    bool result1 = b1.any(); 
    if (result1) 
        cout << b1 << " has a minimum of one-bit set"
             << endl; 
    else
        cout << b1 << " does not have any bit set"
             << endl; 
  
    // function to check if any of 
    // its bits are set or not 
    bool result2 = b2.all(); 
    if (result2) 
        cout << b2 << " has a minimum of one-bit set"
             << endl; 
    else
        cout << b2 << " does not have any bit set"
             << endl; 
  
    return 0; 
}

輸出：

11 has a minimum of one-bit set
000 does not have any bit set

相關用法

注：本文由純淨天空篩選整理自gopaldave大神的英文原創作品 bitset any() in C++ STL。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。